The latest 3dttest++ available in the linux_xorg7_64 distribution has a bug, I've confirmed it on two machines now. 3dttest++ works as expected for linux_openmp_64. The problem appears to be some off-by-one indexing error with the argument parsing maybe? Symptoms are error messages complaining about unrecognized options and then listing an argument as the unrecognized option.
using linux_xorg7_64:
3dttest++ -setA file1 file2
# fatal error, don't recognize option 'file1'
3dttest++ whateverhere -setA file1 file2
# works (clearly should not work!)
using linux_openmp_64:
3dttest++ -setA file1 file2
# works (as it should!)
3dttest++ whateverhere -setA file1 file2
# fatal error don't recognize option whateverhere
